Center rotary used for rainbow brightness

diff --git a/ursaryd.c b/ursaryd.c
index 748ddc3f3eac524d6f08b2319a56a94c954dffaa..85cde2bfdd8e06ef013076f1eab0cad89d4520ed 100644 (file)
--- a/ursaryd.c
+++ b/ursaryd.c
@@ -39,7 +39,7 @@
  *     6       Albireo Zoom    mute            MPD prev
  *     7       eveyrhing else  mute            MPD next
  *
- *     center  -
+ *     center  rainbow brightness
  *     slider  light color temperature
  */
 
@@ -567,6 +567,31 @@ static void update_lights_from_button(int ch, int on)
     }
 }
 
+/*** Rainbow ***/
+
+static double rainbow_brightness;
+static timestamp_t rainbow_last_update;
+
+static void update_rainbow(void)
+{
+  noct_set_ring(8, RING_MODE_LEFT, rainbow_brightness * 127);
+}
+
+static void send_rainbow(void)
+{
+  char val[100];
+  snprintf(val, sizeof(val), "%.3f", rainbow_brightness);
+  mqtt_publish("burrow/lights/rainbow/brightness", val);
+  rainbow_last_update = main_get_now();
+  update_rainbow();
+}
+
+static void update_rainbow_from_rotary(int delta)
+{
+  rainbow_brightness = CLAMP(rainbow_brightness + 0.015*delta*abs(delta), 0., 1.);
+  send_rainbow();
+}
+
 /*** Main update routines ***/
 
 static struct main_timer update_timer;
@@ -672,6 +697,7 @@ static void do_update(struct main_timer *t)
   update_source_buttons();
   update_mpd();
   update_lights();
+  update_rainbow();
 }
 
 void schedule_update(void)
@@ -716,6 +742,9 @@ void notify_rotary(int rotary, int delta)
     case 3:
       update_lights_from_rotary(0, delta);
       break;
+    case 8:
+      update_rainbow_from_rotary(delta);
+      break;
     case 9:
       update_lights_from_slider(delta);
       break;
@@ -813,6 +842,21 @@ void notify_mqtt(const char *topic, const char *val)
          update_lights();
        }
     }
+
+  if (!strcmp(topic, "burrow/lights/rainbow/brightness"))
+    {
+      double b;
+      if (sscanf(val, "%lf", &b) == 1 && b >= 0 && b <= 1)
+       {
+         timestamp_t now = main_get_now();
+         if (!rainbow_last_update || rainbow_last_update + 1000 < now)
+           {
+             DBG("Received foreign rainbow settings");
+             rainbow_brightness = b;
+             update_rainbow();
+           }
+       }
+    }
 }
 
 /*** Main entry point ***/